<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<script>
    
    var f1 = function(a){
        return  a ;
    }
    console.log(f1(3));


    var f11 = a => a
    console.log(f11(8));


    var f2 = function(a,b){
        return a+b ;
    }
    console.log(f2(3,4));
    

    var f22 = (a,b) => a+b
    console.log(f22(5,5));

    
</script>    
</body>

</html>